diff --git a/Demo/IsSignalConnected.py b/Demo/IsSignalConnected.py
index 4dbb19e..c651e61 100644
--- a/Demo/IsSignalConnected.py
+++ b/Demo/IsSignalConnected.py
@@ -34,11 +34,11 @@ class Window(QWidget):
 
     def doTest(self):
         self.retView.append("""
-        # button1 clicked 是否连接: %s
-        # button2 clicked 是否连接: %s
+        # button1 clicked 是否连接: %s, %s
+        # button2 clicked 是否连接: %s, %s
         """ % (
-            self.isSignalConnected(self.button1, 'clicked()'),
-            self.isSignalConnected(self.button2, 'clicked()')
+            self.isSignalConnected(self.button1, 'clicked()'), self.button1.receivers(self.button1.clicked) > 0,
+            self.isSignalConnected(self.button2, 'clicked()'), self.button2.receivers(self.button2.clicked) > 0,
         ))
 
     def isSignalConnected(self, obj, name):
diff --git a/Demo/README.md b/Demo/README.md
index 9fc9353..31e582c 100644
--- a/Demo/README.md
+++ b/Demo/README.md
@@ -204,7 +204,8 @@ PyQt 结合 Opencv 进行人脸检测；
 ## 20、判断信号是否连接
 [运行 IsSignalConnected.py](IsSignalConnected.py)
 
-通过 `isSignalConnected` 判断是否连接
+1. 通过 `isSignalConnected` 判断是否连接
+2. 通过对象的 `receivers` 获取连接的数量来判断
 
 ![IsSignalConnected](ScreenShot/IsSignalConnected.png)
 
diff --git a/Demo/ScreenShot/IsSignalConnected.png b/Demo/ScreenShot/IsSignalConnected.png
index e87aaef..829976f 100644
Binary files a/Demo/ScreenShot/IsSignalConnected.png and b/Demo/ScreenShot/IsSignalConnected.png differ
diff --git a/Test/C++中修改PyQt对象/src.jpg b/Test/C++中修改PyQt对象/src.jpg
deleted file mode 100644
index 2b113b0..0000000
Binary files a/Test/C++中修改PyQt对象/src.jpg and /dev/null differ